"Johnny Boy" is a character from the film Mean Streets, directed by Martin Scorsese. He is portrayed by actor Harvey Keitel and is known for his reckless behavior and desire to prove himself in the world of organized crime. Johnny Boy struggles with his relationships and often finds himself in trouble due to his impulsive actions. The character is a representation of the challenges faced by young men in urban environments, particularly in the context of loyalty and ambition. His story highlights themes of friendship, betrayal, and the consequences of a life of crime, making him a memorable figure in cinema history.